Alexander



(I Io Model.) I H. F. HAMBRUCH;

BUTTON 0R STUD.

No. 395,973. Patented Jan. 8, 1889.

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NITED STATES PATENT FFICE.

HEINRICH FRIEDRICH IIAMBRUCH, OF HAMBURG, GERMANY, ASSIGNOR TO AUG. F.RICHTER, OF SAME PLACE.

BUTTON OR STUD.

SPECIFICATION forming part of Letters Patent No. 395,973, dated January8, 1889.

Application filed October 3, 1888. Serial No. 287,071. (No model.)

To all whom it may concern.-

Be it known that I, HEINRICH FRIEDRICH IIAMBRUCH, a subject of theGerman Eniperor, and a resident of Hamburg, in the German Empire, haveinvented certain new and useful Improvements in Detachable Buttons orStuds, of which the following is a specification.

My invention relates to that class of detachable buttons or studs inwhich the fastening is effected by means of folding wings or flaps; andthe object of my improvement is to afford means for automaticallyoperating the folding wings after having passed the button -hole. Iattain this object by the mechanism illustrated in the accompanyingdrawings, in. which Figures 1 and 2 represent the button with thefolding wings in the position when entering the button-hole. Fig. 3 is aside view, with unfolded wings. Fig. 4 is a view of Fig. 2 from below.Fig. 5 shows a vertical section of my improved fastening device inenlarged scale; and Fig. 6, a vertical section of a button provided witha fastening device of. a somewhat modified construction, also inenlarged scale.

Similar letters re fer to similar parts th roughout the several views.

The button a is connected to a plate, g, which is provided with the arms6 6, serving to arrest the folding wings ff, pivoted at a a to the shankc in both their extreme positions. The shank c is movable between and inthe direction of said arms 6 e, the ends of which bear through suitableholes, 17 2', of the wings f f against the heads m of the latter, whichare formed on this side eccentrically to the pivots n n, so that thearms, which have the tendency of a spring under certain conditions, areactuating the wings ff. The latter are arrested in their extremepositions under the action of the elastic arms 6 e as soon as the squareparts of the heads of the wings meet with their faces, Figs. 1 and 2.For this reason the holes of the shank c, in which the wings rest, areslightly elongated in order to allow a certain play to the pivots n ofthe wings. It will therefore be understood from the drawings that bycausing the shank c to depart from the button-plate g when the wings arein the position Figs. 1, 2, and 5 the Wings must unfold automatically.To effect this, either a pair of crank-levers, 71.71 bearing against thebutton-plate g and the blunt end of the shank c, or a rod, is, Fig, 6,passing through the plate g and the button,

is employed.

The operation of this locking device will be as follows: In the positionshown in Figs. 1, 6o 2, 4, and 5 the button is to be introduced into thebutton-holes until the ends of the levers 71 h touch the adjacent solidmaterial of the objects to be joined together by the button, when thelevers 7a It will rock on the plate g, whereby the wings f are forcedinto the position shown in Fig. 3, in which the de vice is locked, andthe long arm of the levers touches the button-plate g. \Vhen detachingthe button from the objects held together as described, only one of thewings f needs to be turned in line with the shank c, whereupon the otherwing will follow correspondingly, thereby the shank 0 being pushedtoward the buttolrplatc g and the levers 72/ h caused to 75 occupy theiroriginal position, Figs. 1 and 5. \Vhen employing the rod is, Fig. 6, toact upon the shank c, a slight pressure on the knob It" is required tolock the fastening device automatically.

I am aware that prior to my invention detachable buttons and studs havebeen made with vibrating wingspivoted to the shank of a button. Itherefore do not claim such combination, broadly; but

lVhat I do claim as my invention, and desire to secure by LettersPatent, is

1. As an improvement in detachable buttons or studs, the button hereindescribed hav ing the spring-arms e e secured thereto, the movable shankdisposed between said springarms, and the wings ff, pivoted to saidshank and acted upon by said spring-arms, substantially as set forth.

2. As an improvement in. detachable buttons or studs, the button hereindescribed having the plate g, the springarms secured thereto at theirupper ends, movable shank disposed between said spring-arms, the wings ff, pivoted at their inner ends to said shank I00 and 11min g holes 01'openin through which I 01100 OI? Two witnesses, This 1] th day ofAugust,

the lower ends of? said spring-arms pm ect, 1

Ill-IINRIUII FRJEDRIMI HAMBRUOH.

W i111 ossos:

ALEXANDER SPEPH'I, DIE'DRICH. PETERSEN.

hearing :11? flloilr inner ends upon said shank, suhsh'nlfially as setili'm-rh.

In 111 sti1m 1w That I claim 1 110 [foregoing as my imvm inn I hawsignvfl my nnmv, in m-vs 1 and the lovers 7: /z,'s0cured to said plateg, t

